[RESOLVED] is this engine originally 6 bolt or 7 bolt

[mightymousestd]

I have a block that I got from a guy who says it's a 6 bolt block, and although it came with a six bolt crank, the front crank seal and oil pump gaskets are off of a 1g seven bolt. Is there anyway to tell if the block was originally a 6 bolt or a 7 bolt? maybe by using the numbers stamped on the block under 4g63???

 

[nyTalonTsi]

Does it have an oilpan? Because on the 6 bolts the pan looking at it from the drivers side the pan comes straight down, in a 7 bolt theres a curve like bump. I know vfaq had a writeup on this. I don't know how to tell if there isnt a pan. Anyone Else chime in???

 

[TURBOGSX]

main bearing surface is bigger on 6bolt so see were im going check your 6 bolt crank to the surface of the block you got

 

[BoredDSM]

Look on the crank and see how many bolt holes there are to bolt on the flywheel?

 

[mightymousestd]

so the deal is it came with a 6 bolt crank, but the oil pan has a hump in it and the gasket set for oil pump doesn't fit for a 90 model, 94 model or 96 model eclipse...the closest one was off of a 90 model, but the actual gasket for the pump was missing holes for the allignment studs...so I don't know what to think of it...any ideas?

 

[interex]

Look on the crank and see how many bolt holes there are to bolt on the flywheel?

I think you forgot to read the entire post.

 

[BoredDSM]

I think you forgot to read the entire post.

From what I know there are differences in the main bearing sizes. If its a 6 bolt crank the journals should line up with the bearings on the block. If not it would not fit.

 

[snowborder714]

Think you might have your dates about 5 years off...7 bolts were from 93-99.

I believe he was saying that in relation to the 1g 7 bolt.

Either way, 7 bolts were from 92.5 until 99.

I believe you could also check the head stud holes in the block. The 7 bolt studs are 11mm and the 6 bolt studs are 12mm.

 

[mightymousestd]

graci fellas